Making a dig about somebody's looks on their wedding day is a big no-no. But Sam must have missed that memo, because last night, the MAFS groom shocked viewers when he declared he'd "never really dated girls as big as Elizabeth in the past". He went on to suggest that he could perhaps "get her running in the morning".
But despite the backlash, the Sydney tradie stands by his remarks.
"I'm an honest guy, and that was the honest truth," Sam, 26, tells TV WEEK. "She's not a big girl, but she's just a little bit bigger than girls I normally date."
"Health and fitness is huge for me and I was a bit concerned when I saw Elizabeth. I just hoped she'd want to live an active lifestyle too," he continues.
"It's her personality too. She just seemed to be very big in every aspect. She's super-loud and you can't escape her. She talks over you and it can be confronting."
Though Sam said he was willing to give their relationship a shot, he says he wasn't "over the moon" with his match.
"I did feel a little cheated," he says.
"It wasn't what I asked for. My type is a lot more natural and down-to-earth."
Elizabeth, on the other hand, was more than happy with her groom – at first. She says Sam's shortcomings became apparent as time went on.
"I'm someone who goes with my gut feeling, and I couldn't read him," the 27-year-old explains. "He just wasn't connected, which just made me feel uneasy."
Things look set to go from bad to worse. This week Sam will leave Elizabeth stunned when he ditches her at the last minute ahead of their honeymoon.
And hinting at even more drama to come, Elizabeth blasts her groom as a "great actor".
"He's the type who would say anything to please you to your face – and then say the complete opposite to other people," she declares. "I think he has unreasonable expectations of women."
Married At First Sight airs Sunday to Wednesday, 7:30pm, on Nine Network.